code: def configure_optimizers(self):
      return torch.optim.Adam(self.parameters(), lr=1e-3)
  
file_path: ray/python/ray/train/examples/experiment_tracking/lightning_exp_tracking_model_dl.py
imports: import pytorch_lightning
  import torch
  import torch.nn.functional
  from torch.utils.data import DataLoader, TensorDataset
label_desc: Use image node_id 4 for calling the DummyModel obj's underlying member method code with example usage: obj.configure_optimizers() and returns: torch